40438051 has 4 divisors (see below), whose sum is σ = 41041672. Its totient is φ = 39834432.

The previous prime is 40438033. The next prime is 40438063. The reversal of 40438051 is 15083404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40438051 - 2¹¹ = 40436003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40438031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301710 + ... + 301843.

It is an arithmetic number, because the mean of its divisors is an integer number (10260418).

Almost surely, 2^40438051 is an apocalyptic number.

40438051 is a deficient number, since it is larger than the sum of its proper divisors (603621).

40438051 is an equidigital number, since it uses as much as digits as its factorization.

40438051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603620.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40438051 is about 6359.0919949314. The cubic root of 40438051 is about 343.2390873583.

The spelling of 40438051 in words is "forty million, four hundred thirty-eight thousand, fifty-one".